Home / 100,290.40-138,364.14-60,005.32

Finding the Fourth Proportional to 100,290.40, 138,364.14 and 60,005.32

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Solution

The fourth proportional to 100,290.40, 138,364.14 and 60,005.32 is: 82,785.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,290.40 : 138,364.14 = 60,005.32 : x
  2. Step 2: Convert to fraction form
    100,290.40/138,364.14 = 60,005.32/x
  3. Step 3: Cross multiply
    100,290.40x = 138,364.14 × 60,005.32
  4. Step 4: Simplify right side
    100,290.40x = 8,302,584,497.22
  5. Step 5: Solve for x
    x = 8,302,584,497.22/100,290.40
  6. Step 6: Final answer
    x = 82,785.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.